Looking for a phone with dialpad buttons but that can plausibly display a PDF file

(NOTE: This phone is not for use with the mobile carrier that I asked about in a recent post in the Network forum); it will be used abroad.

As the post title says, I am looking for a phone that has the regular dialpad buttons, but that also would allow for me to display a PDF file. Yes, I understand that this could be tricky. It would also need to have some sort of SD card so that I could transfer such PDF files to it. Playing MP3 files into a regular headphone jack is also desired, but that seems to be a regular feature of any decent phone.

Yes, I understand that I could get any number of smartphones that are all screen, but folks have told me that hitting the "buttons" on the screen is a bit problematic. I also understand that the Blackberry has this feature, but having a full QWERTY keyboard makes these buttons so small (and the phone so wide) that it defeats the purpose. The ideal phone would be one that was smart AND had dialpad buttons, while not being too expensive.